I'm Not Writing No-CP Stories Anymore, Teacher Sakuraba!

This is a plot bunny for an IF side story to Teacher Sakuraba next door. First, let's assume an alternate Taisho era with no World War II. Second, if you only want exclusive romance with no pairings, don't click! This is just a place for some of the characters to have a little fun. Since the secret identity is her younger sister, there wasn't even a messy option for me to choose. Sigh. First, here's the lineup: 1. Flame Hashira Kyojuro Rengoku 2. Taisho-era arms dealer Yuki Hisakawa Who else? Theme: No idea when I'll get around to filling this in